针对重力式基础海上风力机的防雷保护问题,该文构建一体化电磁暂态模型,基于电磁暂态软件ATP-EMTP研究雷电暂态响应,并分析叶片长度、塔筒高度和桨叶旋转角度等关键因素的影响。仿真结果显示：雷击引起MV级的暂态电压变化,并呈现欠阻尼式振荡衰减,塔基处仍存在kV级的响应电压;桨叶长度和风力机塔筒高度均与雷电暂态响应幅值成正相关;当遭受雷击的叶片与水平面夹角呈90°时,机舱处暂态电压最高。
Abstract
To provide a theoretical basis for the lightning protection of gravity basic offshore wind turbines, an integrated electromagnetic transient model is constructed. Based on the electromagnetic transient software ATP-EMTP, the lightning transient response is studied, and the influence of key factors such as blade length, tower height and blade rotation angle are analyzed. The simulation results show that the transient voltage of MV level is caused by lightning strike, and it exhibits underdamped oscillation attenuation, and the response voltage of kV level still exists at the gravity foundation. Both blade length and wind turbine tower height are positively correlated with lightning transient response amplitude. The transient voltage in the cabin is highest when the angle between the lightning-struck blade and the horizontal plane is 90°.
关键词
海上风力机 /
雷击 /
暂态响应 /
重力式基础 /
一体化模型
Key words
offshore wind turbines /
lightning /
transient response /
gravity foundation /
integrated model
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基金
基于无线网络全覆盖的海上风电安全生产管理平台建设研究与应用（项目编号：XT-KJ-2021012）
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